Analysis
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max time kernel
163s -
max time network
179s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
12-02-2022 04:13
Static task
static1
Behavioral task
behavioral1
Sample
15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe
Resource
win10v2004-en-20220112
General
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Target
15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe
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Size
89KB
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MD5
c4fff953e8bac82ec7abb433c5f377ec
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SHA1
598d9cb35e7d90f8895077c0797606f21fd36caf
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SHA256
15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6
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SHA512
f05b7afe3d258cc73a9576dd418b1aba08905ced36a640d071d3c978e54bbce236f493db8083ed5e47b42d6f6cf90368816b5624d8d6a330f242eb0b95e28a16
Malware Config
Signatures
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Sakula Payload 4 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe family_sakula C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe family_sakula behavioral2/memory/1232-135-0x0000000000400000-0x000000000041B000-memory.dmp family_sakula behavioral2/memory/3680-136-0x0000000000400000-0x000000000041B000-memory.dmp family_sakula -
Executes dropped EXE 1 IoCs
Processes:
MediaCenter.exepid process 3680 MediaCenter.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MicroMedia = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MicroMedia\\MediaCenter.exe" 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe -
Drops file in Windows directory 3 IoCs
Processes:
svchost.exeTiWorker.exedescription ioc process File opened for modification C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat svchost.exe File opened for modification C:\Windows\Logs\CBS\CBS.log TiWorker.exe File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
MusNotifyIcon.exedescription ioc process Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 MusNotifyIcon.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotifyIcon.exe -
Modifies data under HKEY_USERS 54 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "6.975000" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132892893567551326" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CacheSizeBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyGroupBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4288" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4032" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PeerInfoCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "1157726" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "4" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "4.485395" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4280" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\GroupConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "90228624" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\Geo_EndpointFullUri = "https://geo.prod.do.dsp.mp.microsoft.com/geo" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\GeoVersion_EndpointFullUri = "https://geover.prod.do.dsp.mp.microsoft.com/geoversion" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0" svchost.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exeTiWorker.exedescription pid process Token: SeIncBasePriorityPrivilege 1232 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe Token: SeBackupPrivilege 2328 TiWorker.exe Token: SeRestorePrivilege 2328 TiWorker.exe Token: SeSecurityPrivilege 2328 TiWorker.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.execmd.exedescription pid process target process PID 1232 wrote to memory of 3680 1232 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe MediaCenter.exe PID 1232 wrote to memory of 3680 1232 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe MediaCenter.exe PID 1232 wrote to memory of 3680 1232 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe MediaCenter.exe PID 1232 wrote to memory of 224 1232 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe cmd.exe PID 1232 wrote to memory of 224 1232 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe cmd.exe PID 1232 wrote to memory of 224 1232 15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe cmd.exe PID 224 wrote to memory of 324 224 cmd.exe PING.EXE PID 224 wrote to memory of 324 224 cmd.exe PING.EXE PID 224 wrote to memory of 324 224 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe"C:\Users\Admin\AppData\Local\Temp\15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1232 -
C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exeC:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe2⤵
- Executes dropped EXE
PID:3680 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\15c3a50c17a174cd6610c7d1519e40b5d8f8a34cf3a925142fdd6929c9e467d6.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:224 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.13⤵
- Runs ping.exe
PID:324
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:208
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:3792
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2328
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
df353b67a8e5a9311f3e0aa123c86c79
SHA146f431a75bac39283ff7902022674756257cd92a
SHA256b4a684840a48ceee7c0883daf7e539dc62f42a8ecf727dd48d19d47f8f6605e6
SHA5120330c24f82882e4900bde8372b85ad7776a2a6f5d9f245ee6b210305c80b0287db0db760401f4fb18252332b747fd8e34865a655c358fe1c2e9304f61f76b42b
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MD5
df353b67a8e5a9311f3e0aa123c86c79
SHA146f431a75bac39283ff7902022674756257cd92a
SHA256b4a684840a48ceee7c0883daf7e539dc62f42a8ecf727dd48d19d47f8f6605e6
SHA5120330c24f82882e4900bde8372b85ad7776a2a6f5d9f245ee6b210305c80b0287db0db760401f4fb18252332b747fd8e34865a655c358fe1c2e9304f61f76b42b